Electrical signaling system.



I A. GOLDSTEIN.

' ELECTRICAL SIGNALING SYSTEM.

APPLICATION FILED HA3. 9, 1910.

' Patented Aug. 9, mm.

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ym t ma MEI ALBERT GOLDSTEIN, or 'NEW YORK, NJY AssIGNoa to INTERNATIONAL ELECTRIC rnoTncTIoN .coMrANY; A CORPORATION on NEW YORK.

ELECTRICAL SIGNALING SYSTEM.

Speciflcationjof Letters Patent;

Patented Aug. 9, 1910.

Application filed March 9, 1910. Serial No. 548,258.-

energizing the system,another and weaker source is automatically cut into circuit and the circuit itself adjusted tosuit said weaker source. n i

The object of the invention isto simplify the system and to render it unnecessary to employ two sources of current both of nor-' malstrength sufficient to energize the whole line and its several loops.

The accompanying drawing is an electrical diagram showing my system. i

The source of current-grounded at G may be any source and is here represented at A by the conventional symbol of a dynamo.

The magnet, H at the' receiving station is provided with a switch lever which is in four parts h, h, b 1?, insulated from one" another. Part it opens and closes circuit at points 1 and 3: 'part 72. at'points2 and 1:

part-h at points 8, 9, and part b atpoints' 5, 6, 7. Magnet H is normally energized, thus-closing circuitat-points 1, 2 and opening circuit at the other points. Magnets D and E also at the receiving station, through their switch levers d, e, open and close cir cuit at points 13, 14. These magnets respectively control the indicatin means, here shown as glow lamps-P, Q. agnet F also at the receiving station is a neutral wound relay having two coils, and controls its switch lever f1to open and close circuit at? points 10, 11; The. distant stations of which two are showmand of which any desired number-may be present, are at the ends of the loops 1,1 connected in series. At each; station is a signal transmitting device, here shown as keys T, T, by meansof which circuit ateach station may be opened or closed to ground G or G The normal metallic circuit follows; from non-grounded'po e of source.

A, bywire 15, to' switchlever 1., wire 16,- --1nagnet D,one coil of magnet-F,""wire 17 which will operate ma n turn will correspon ingly open and close Assu roceeds as;

loops I I and transmitters T T therein,

wire 18, wire 32, other coil of magnet F, switch lever f, contact point 11, wire 19,

switch lever h, contact point 2, and by wire.

20 to A.. Whenlcircuit is closed to ground G or Gr by the transmitter T or T at any distant station, magnet F attracts its lever f to close contact at 10 and two leads are established as follows: 1. From non-grounded l pole. of source A, point 1, switch lever h, wire 16,- magnet D, one coil of magnet F, wire 17 to transmitter T and ground. 2. From non-grounded, pole of source A, to

junction. X, by wire 21, to magnet E, to contact point 10, switch leaver f, other coil of magnet F, wire 32, wire 18 to transmitter T and ground.

, The lamp circuit proceeds as follows from nonrounded pole of source A, to point 1, switch lever h, wire 16, to junction I Y, by wire 27 to resistance R, by wires 28, 29 to. switch levers d, e, and when saidlevers closecircuitat points 13, 14, to lamps P, Q, to wire 30, to switch lever h, point 2, wire 20 and grounded pole of A.; By. suitably manipulating the keys T T slgnals aresent ets' D, E, and these the circuits to the lamps. P, Q, by which said signals will be translated or indicated. Damp Q, 1s always lighted, except when signals are G or Gr comes in circuit, the neutral magnet F closes contact at 10, thus bringing magnet E into circuit, and so opening circuit, at 14.

,Both lamps P and Q are then out, and the signal is translated by flashes occurring simultaneously inboth lamps.

V e that for any cause the source A of current becomesinoperative. Magnet H normally energized because in shunt 22, now becomes deenergized, and itsswitch levers n'et H and retraction of switch levers h, h bring this battery into circuit in place of the inoperative source A. i

- The circuit from b tteryLprooeeds as follows: from non-grounded pole of battery being transmitted. As soon as the. ground thereupon break circuitat 1 and 2 and close L to wire24, point 3, switch lever h wire 16, magnet D,one coil of magnet F, wire 25,

point 7, switch lever h point 5, wire 26, wire 32, other coil of magnet F, switch lever 7, point 11, wire 19, switch lever h, point 4, wire 23 to grounded pole of battery L. The lamp circuit now proceeds as follows: from non-grounded pole of battery L, wire 24," point '3, switch lever h, wire 16, point Y,' wire 27, point 9, switch lever h point 8,.

wires 29 and 28 to switch levers d, e, to lamps P, Q, wire 30, switch lever k, point 4, wire 23 to grounded pole of L.

Attention is now particularly called to wire 31 which extends from junction Z between loops I, I to point 6.- This wire forms an additional return lead to short-circuit each loop individually, and hence in practice if the number of loops or distant stations is increased, the. number of return wires -31 and points 6 will be correspondingly increased.

The terminals of resistance R are respectively; connected by wires 29 and 33 to contact points 8, 9. closed by switch lever 71 between these points, said resistance is short-circuited.

The advantages gained will now easily be followed. Upon the failure of one source of current, namely, A, anew source of curbecomes individually short-circuited; or, in

other words, signals may be sent from the transmitter of any loop without. requiring the current to pass through all the loops in series, and the current path is therefore greatly shortened. Thus having two sources of current of different potentials, Iubring the weaker source automatically into circuit upon the failure of the stronger source, and at the same timeautomaticallyadjust the circuit, to suit said weaker source. 'When' the source A' of current is restored magnet H again becomes energized, and the circuit resumes its normal condition.

I claim: 1

1. The combination of a metallic circuit,

a source of current therefor, means for transmitting current impulses in said circuit,

, means for translating said impulses, a second source of current, and means actuated by the failureof said first sourde for cutting in said second source, and means for var ing the electrical conditions on said circu1t.-

2. The combination of a metallic circuit,

Hence when circuit is" a source of current therefor, means for trans mitting current impulses in said circuit,

means for translating said impulses, a second source of current weaker than the current from said first source, and means ac-.-

tuated by the failure ofsaid first source for cutting in said second source, and means for reducing the resistance of'said circuit.

3. The combination of a source of current, a ground connection at one pole thereof, a line metallic circuit, a ground connection from said metallic circuit, a transmitter in said ground connection, translating means in said metallic circuit actuated by said transmitter, a second source of current weaker" than the current from said first source, and, means actuated by the failure of said first source of current-for cutting said second source into saidcircuit, and means for short-circuiting said metallic circuit around said transmitter.

4.. The-combination of a source of current, a ground connection at'one pole thereof, a line metallic circuit, a ground connection from said metallic circuit, a transmitter in said ground connection,'translating means in said. metallic circuit actuated by said transmitter, a second source I of current weaker than the current from" said first source, and means actuated by the failure of said first source of current for cuttin said second" source into said circuit, and means for; reducing. the-resistance of said circuit.

5. Thecombination of a source of current, a ground connection at one-pole thereof, a line metalliccircuit, a ground connection from" said metallic'circuit, a transmitter in saidound' connection, translating means in' said metallic circuit actuated by said transmitter, a second source of current weaker than. the current from said first source, means actuated by the failure of said first source of current for short-circuiting said metallic circuit, means for re ducing the resistance of said circuit and 6. The combination of a source of current, a ground connection at one pole thereof,

a line metallic circuit including a plurality of loops in series, aground connection from each of said loops, a' transmitter in each of said ground connections, translating means in said circuit actuated by each of said transmitters, a second sourge' of current weaker than the current from said first source, means actuated by the failure of said first source, for individually short-circuiting each'of said loops and means for cutting said second source into circuit.

7. The combination of'a source of current, a ground'connection at'. one pole thereof, a.

line metallic circuit including a plurality of loops in series, a ground connection from each of said loops, atransmitter in each of said ground connections, translatin means a in said circuit actuated by each of sa1d'.transmitters, a resistance in] circuit with said translating means, a second source'of current weaker than the current from said first source, means actuated by the failure of said first source for'individually shortecircuiting each of'said loops, means for short-circuitin said resistance and means for cutting sai second source into" circuit.

8. The combination of a source'o'f current, a ground connection {at one pole thereof, a line metallic circuit a ground connection from said metallic circuit, a transmitter in said ground connection, an electro-magnet normally energized in said metallic circuit, translating means in said circuit actuated by said transmitter, a second source of current Weaker than the current from said first source, and circuit connections controlled by said electro-magnet for short-circuiting said metallic circuit around said transmitter and for cutting in said-second sourcefof current;

- 9. The combination of a source of current, a ground connection at one pole thereof, a line metallic circuit, a. ground connection from said metallic circuit, a transmitter in sand ground connect1on, an electro-magnet,

normally energized in said metallic circuit, translating means in said circuit actuated ance an Witnesses:

of, a line metallic circuit including a plurality of loops in series, a ground connection from each of said loops, a transmitter in each of said ground connections, translating means in' said circuit actuated by each of said transmitters an electro-magnet normally energized 1n said metallic circuit, a second source of current. weaker than the 50 currentfrom' said first source, and circuitconnectfims controlled'by said electro-magvnet for individually short-circuiting each of,

said loo s, for short-circuiting said resist-- of current. a I In testimony whereof I have aflixed my signature presence of two witnesses.

ALBERT GOLDSTEIN.

Gnnrnunn '1. Poems, Ma r T. MOGARRY'.

for cutting in said second source 55 

